Process for dewatering sludges

Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

210730, 210731, 210738, C02F 1114

Patent

active

043828647

ABSTRACT:
A process for dewatering sludges, which comprises performing a first stage agitation of the sludge to be dewatered during addition of a first high molecular weight flocculant developing in an aqueous solution an electric charge in polarity opposite to that of the sludge to effect neutralization of the electric charge of the sludge, conducting subsequently a second stage agitation of the sludge during a further addition of a second high molecular weight flocculant developing in an aqueous solution an electric charge in polarity opposite to that of said first flocculant to cause flocculation of the sludge and subjecting the so flocculated sludge to a dewatering operation, wherein a flocculant composed of a natural high molecular organic compound or a derivative thereof is used for at least one of said first and second flocculants with simultaneous employment of high power agitation for said first stage agitation, which process obtain a dewatered cake having low moisture content with efficient dewatering of the sludge.

REFERENCES:
patent: 3165465 (1965-01-01), Ray et al.
patent: 3259570 (1966-07-01), Priesing et al.
patent: 3338828 (1967-08-01), Clark
patent: 3377274 (1968-04-01), Burke et al.
patent: 3397139 (1968-08-01), Sak
patent: 3533940 (1970-10-01), Peniston et al.
patent: 3617568 (1971-11-01), Ries, Jr.
patent: 4105558 (1978-08-01), Heinrich et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Process for dewatering sludges does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for dewatering sludges, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for dewatering sludges will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-525459

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.